Official Scangauge II Thread - Share your Data, Discuss Settings ,Problems, Findings! - Toyota Yaris Forums

BailOut · 08-16-2007, 08:26 PM

The SGII cannot definitively show a DFCO mode because there are no OBDII codes for fuel injection. As such, each manufacturer makes their own codes, and as of today they are proprietary.

I'm not sure why anyone would doubt the existence of DFCO. It's not science fiction. It is documented in many places, and can be tested by any individual using what I outlined here. It's a simple concept, and whether a car has DFCO or not is highly obvious when the test I outlined is performed on a vehicle that doesn't have it (when I tried it on my rental Aveo (I can't believe GM actually produced this car... no thought, no soul, no reliability, CELs at the drop of a hat, etc...) its AT immediately went into a protective mode, and when I tried it on our old Tacoma it was like driving through a meter of water).

There are even varying levels of DFCO. One of the rental cars I got stuck with when my Yaris' door was being repaired was a POS GMC Canyon pickup. It was a real PITA to drive down the mountain because (aside from handling like an overweight marshmallow that would understeer or oversteer but never rail a turn) it took like 3 or 4 seconds of engine braking to start DFCO, but only half of the 6 cylinders. Then, after 8 - 10 seconds more, it would shut the rest of them off. It made for some rather unpredictable but inevitable engine braking.

08-16-2007, 08:26 PM	#11
BailOut Steals terrorist's lunch View User's Garage Drives: 2007 Yaris Liftback Join Date: Mar 2007 Location: Reno, Nevada, USA Posts: 1,299	The SGII cannot definitively show a DFCO mode because there are no OBDII codes for fuel injection. As such, each manufacturer makes their own codes, and as of today they are proprietary. I'm not sure why anyone would doubt the existence of DFCO. It's not science fiction. It is documented in many places, and can be tested by any individual using what I outlined here. It's a simple concept, and whether a car has DFCO or not is highly obvious when the test I outlined is performed on a vehicle that doesn't have it (when I tried it on my rental Aveo (I can't believe GM actually produced this car... no thought, no soul, no reliability, CELs at the drop of a hat, etc...) its AT immediately went into a protective mode, and when I tried it on our old Tacoma it was like driving through a meter of water). There are even varying levels of DFCO. One of the rental cars I got stuck with when my Yaris' door was being repaired was a POS GMC Canyon pickup. It was a real PITA to drive down the mountain because (aside from handling like an overweight marshmallow that would understeer or oversteer but never rail a turn) it took like 3 or 4 seconds of engine braking to start DFCO, but only half of the 6 cylinders. Then, after 8 - 10 seconds more, it would shut the rest of them off. It made for some rather unpredictable but inevitable engine braking. __________________ - Brian Share the Road I often carry 2 carpool passengers and mountain bikes or snowboards/skis over a 4,500 foot elevation difference. Click the graphic above to see my detailed mileage logs.